 For example, for a CPU with maximal temperature of 85 °C and a current temperature reading of 35 °C, the value reported by PECI would be −50 °C.Since the value reported by PECI takes into account internal processor information about safe operating temperatures, it alleviates the need for the BIOS or operating system to make potentially incorrect assumptions about this limit.Furthermore, it supports dynamic fan control with a high degree of accuracy, where fan speed can be progressively increased as the value approaches zero.